How does the skin tightening laser work? The skin tightening laser works by heating the skin up to 39 to 40 degrees Celsius, which in turn will trick your brain to thinking we caused some skin injury. At that point your brain will start to slowly rebuild collagen, leading to an improvement in skin sagging and crepiness.

Skin Tightening Lasers Trick Your Brain

Michael Law MD Aesthetic Plastic Surgery nurse Tracy explains that Laser Skin Tightening works by heating the skin which tricks the brain into thinking there is skin injury. At that point your brain begins to slowly rebuild collagen.